Device for operating mold members



Patented Aug. 12, 1930 ARTHUR T. BATEMAN AND ANDREW IRVINE. oF DETROIT, MICHIGAN, AssIGNoRs To PATENT oFFmE e l BOHN ALUMINUM & BRASS CORPORATION, F DETROIT, MICHIGAN, A'CORIORATION,

OF MICHIGAN DEVICE FOR OPERATING MOLD MEMBERS Application led September 4, 1928. Serial No. 303,781.

The invention relates to mold operating mechanisms and refers more particularly to devices for operating mold cores. @ne of the objects of the invention is to provide a simple construction of operating device which will readily move a mold member to or from its casting or operative position. Another object is to provide a cam for operating the mold member, which cam is bodily movable relative to the base of the mold. Further objects of the invention reside in the novel features of construction and combinations and arrangements of parts as more fully hereinafter set forth.

In the drawings Figure 1 is a sectional elevation of the mold and an operating device embodying our invention;

Figure 2 is a cross section on the line 2-2 of Figure 1;

Figure 3 is a bottom plan view thereof.

As shown in the present instance, the mold 1 has the hinged permanent mold sections Q, and 3, which are mounted upon the metal base 4. The legs 5 secured to the base at its corners support the base. 7 is a movable permanent mold member or core which slidably engages the base and is adapted to extend upwardly therethrough.

For raising this core into castings or operative position and lowering the core, we have provided the rotatable cam 8 which is bodily movable relative to the base and which has the plate 9 and the diametrically opposite pairs of upper and lower cam portions 10 and 11 respectively. VThese cam portions are located at the periphery of the plate and extend from its upper and'lower sides. They are also longitudinally arcuate and havevsubstantially parallel bearing faces which are inclined relative to the plate. 12 are diametrically opposite brackets secured to and depending from the base 4 and having grooves 13 in their inner faces for receiving the cam portions, the upper end lower faces yof these grooves having the same inclination as the bearing faces of the cam portions. The inclina-tion is within the angle of fricton so that the cam will automatically remain in its po- Stons of rotative adjustment. 'lhs Core has the reduced portion 14 extending axially downwardly through they plate 9 ofthe cam, there being preferably a slight clearance between this reduced portion and the plate. The core also has the downwardly facing annular shoulder 15 engageablefwith the upper face of the plate and further has secured to the lower end of its reduced portion the collar 16 forming the annular shoulder 17 vfor engaging the lower face of the plate. Both the' shoulders 15 and 17 are preferably convex and are spaced apart a distance slightly greater than the thickness of the plate so that rotation of the cam will not cause the core to bind in the base.

For angularly locating the core so that it will assume its correct casting or operative position, there is the key 18, which-extends longitudinally of and is secured tothe portion of the coreslidably engaging the base 4, this keyv slidably engaging in the groove 19 formed in the base. 2O is a handle secured to the plate 9 of the cam and extending horizontally toward the front of they apparatus, the brackets 12 being at the sides so that they 'will not interfere with the angular movement of the handle in rotating the cam. The frontv legs 5 are so positioned that they will contact with this-handle to limit its angu lar' movement, the arrangement being such that whenthe handle is in contact with one of these' legs the core is in its casting or operative position and when` the handle is i-n contact' with the other' of `these legsthel core is in its' lowermost position.

Vhatwe claim asouriinvention is :V

1. The" combination with base andamold member' movable relative thereto, of a rotatable.- camhaving a plate and cam portions on opposite sides' ofV said plate with'substantial-A ly parallel bearing faces, means fixed to said base for' engagngsad bearing faces, and means for securing said mold member to said cam.

2. The combination withA a base and a longitudinally movable mold member extending transversely of said base, of a rotatable cam having a plate and cam portions ony opposite sides of said plate with substantially parallel bearing faces, means secured to said,A

base for engaging said bearing faces, means for securing said mold member to said cam, and means for holding said mold member from rotation.

3. The combination with a base and a mold member extending through said base and movable transversely thereof, of a rotatable cam having a plate and pairs of arcuate cam portions on said plate, each pair having substantially parallel faces on opposite sides of said plate and inclined relative thereto, means for securing said mold member to said plate, and brackets secured to said base and provided With grooves for receiving said pairs of cam portions.

4. The combination With a base and a mold member movable transversely of said base, of a rotatable cam below said base having a plate and diametrically opposite pairs of arcuate cam portions, each pair having substantially parallel bearing faces on opposite sides of said plate and inclined relative thereto, said plate having an opening therethrough concentric With said cam portions and said mold member having a portion extending through said opening, shoulder forming means upon said mold member engaging opposite sides of said plate, and diametrically opposite brackets secured to and depending from said base and having grooves for receiving pairs of arcuate cam portions.

5. The combination with a base and a mold member movable relative thereto, of a movable cam comprising a plate having cam portions with substantially parallel vbearing faces, means for operatively connecting said mold member to said cam, and fixed means engaging and cooperating with said bearing faces for imparting movement to said mold member upon movement of said cam.

6. The combination with a base and a mold member movable relatively thereto, of a rotatable cam comprising a plate having a cam portion, means for operatively connecting said mold member to said cam, and fixed means engaging and cooperating with said cam portion for imparting movement to said mold member upon rotation of said cam.

The combination with a base anda mold member movable relative thereto, of a movable cam operatively connected to said mold member and having a cam portion, andL fixed means for engaging and cooperating With said cam portion for impartingr movement to said mold member upon movement of said cam.

In testimony whereof We aliiX our signatures. N

ARTHUR T. BATEMAN. ANDREW/V IRVINE, 

